US 2008/0174075 A1Published application

Cylinder Head Gasket

AssigneeElringKlinger AG

InventorsArmin Diez, Frank Schaible

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Abstract

The invention relates to a cylinder head gasket comprising a gasket unit (10), which has at least one through opening, particularly a combustion chamber opening (12), and which has at least two interacting gasket plies (18, 20, 22) of which one (18, 20) is provided with a flexible bead (26, 28) encircling the through opening, and the other (22) is provided with a device (34) that limits this flexibility. Said device (24) has, on opposite sides (34, 38), alternating recesses (30) and elevations (32) whereby a recess (30) is located, at least partially, opposite an elevation (32). At least a portion of the recesses (30) and of the elevations (32) have an essentially trapezoidal cross-section with sloped delimiting walls (36) extending between the adjacent recesses (30) and elevations (32) of one side (34 or 38) of gasket ply (22), and the adjacent opposite delimiting walls (36) of both sides (34, 38) delimit a web cross-section (SQ1) of gasket ply (22) that is greater than or equal to the web cross-section (SQ2) delimited between the opposite recesses (30) of both sides (34, 38).

Claims9

Dependent claims

A cylinder head gasket with a seal unit (10) which has at least one through opening, especially a combustion chamber opening (12), and which has at least two sealing layers (18, 20, 22) interacting with one another, of which one (18, 20) is provided with at least one resilient bead (26;

28) which encompasses the through opening and the other (22) is provided with a means (24) which limits this resilience and which on opposing sides (34, 38) has in alternation depressions (30) and elevations (32) such that at least in part one depression (30) is opposite one elevation (32), characterized in that at least some of the depressions (30) and elevations (32) in cross section are essentially trapezoidal, with limitation walls (36) which run obliquely between adjacently configured depressions (30) and elevations (32) of one side (34 or 38) of the other sealing layer (22) and that the limitation walls (36) of two sides (34, 38) adjacently opposite one another border a crosspiece cross section (SQ1) of the other sealing layer (22) which is greater than or equal to the crosspiece cross section (SQ2) delineated between the opposing depressions (30) of these two sides (34, 38).

Dependencies are inferred from the claim text.